Moin together, in May last year my battery was changed because it was allegedly broken. Costs I had to take over. Now the same thing happened. I come into the garage last week and everything is dead, 0V voltage, no light flashes anymore. Car was brought into the workshop, thoroughly tested (allegedly!) and found no electrical error – all currents are as they should be told to me. As far as so good … new 92Ah battery was installed which I but again myself (plus 330€ work wage)! Warranty request (Bat is only 9 months old) was rejected with the cuckolding justification of Mercedes: You have been driving only 3000km (voiced) since May 2022 and that is not enough to keep the battery working!! Who has ever heard such nonsense?? To my question, what is the minimum driving distance to ensure the health of the battery I got no answer. Rarely heard bigger nonsense. It says that I should pay in the the last 9 months did not drive very much, but the Bat was never deep discharge – it often hung on the CTEK charger. On one Friday everything was still fine, on Monday morning then not a spark of tension anymore. I have the CTEK Battery Sense (since the last battery change) but unfortunately not tracked the charging condition in the last weeks. I am completely unclear what is going on, the workshop by the way! Gruss Uwe